<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>formnovalidate 属性</title>
</head>
<body>

<form action="/example/html5/demo_form.asp" method="get">
  E-mail: <input type="email" name="userid" /><br />
  <input type="submit" value="提交" /><br />
  <input type="submit" formnovalidate="formnovalidate" value="进行没有验证的提交" />
</form>


</body>
</html>